Unit for extending the functions of electronic computers



FIG. 1 is a top, front and right side perspective view of a unit for extending the functions of electronic computers showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a top, front and right side perspective view thereof with a front cover in a open position; and,

FIG. 9 is a top, front and right side perspective view thereof showing the use of the apparatus.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a unit for extending the functions of electronic computers, as shown and described. 